However, we find and see in the words of the sages of the Talmud that they have made the path of Torah [correction] easier for us than the sages of the Mishnah. This is because they said, “One should always practice the Torah and Mitzvot [correction of egoism], even Lo Lishma [for one’s sake], and from Lo Lishma [for one’s sake] he will come to Lishma [for the sake of others and the Creator] because the Light in it reforms him.”

Thus, they have provided us with a new means instead of the penance presented in the above-mentioned Mishnah, Avot: the “Light in the Torah.” It bears sufficient power to reform one and bring him to practice Torah and Mitzvot [correct egoism by the way of Light] Lishma [for the sake of others].
– Baal HaSulam, “Introduction to The Study of Ten Sefirot,” Item 10[36254]